Home
Class 12
PHYSICS
The hot wire ammeter A in Fig. shows som...

The hot wire ammeter A in Fig. shows some deflection, but not in Fig. Why ?

Text Solution

Verified by Experts

This is because in Fig. condenser blocks d.c. offering infinite resistance. Therefore, current in circuit of Fig. is zero. In case of Fig. a.c. is not blocked by condenser. Therefore, ammeter A shows some deflection.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Solved Examples (b)|1 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Short Answer Qusetions|2 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Exercise|191 Videos

  • ELECTROMAGNETIC WAVES

    PRADEEP|Exercise II Focus multiple choice question|5 Videos

Similar Questions

Explore conceptually related problems

A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf epsi//2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig. Shows no deflection is :

A voltmeter, an ammeter and a resistance are connected in series with a lead accumulator. The voltmeter gives some deflection but the deflection of ammeter is almost zero. Explain why?

Hot wire ammeters are used for measuring

In the circuit in Fig. 7.27 , bulb B does not glow although ammeter A indicates that the current is flowing . Why does the bulb not glow?

How will the reading in the ammeter A of Fig. 6.39 be affected if another identical bulb Q is connected in parallel to P as shows. The voltage in the mains is maintained at a constant value.

When primary coil P is moved towards secondary coil S, Fig. the galvanometer shows memetary deflection in the can be done to have larger deflection in the galvanometer with same battery ? State the related law ?